This was a prototype I made while I was working at Soluciones de Diseño Integral S.A. The client, which is one of the biggest transportation suppliers in Chile, asked us to design a locking system for a container truck tha could help to minimize robberies during transportation and that could be easily installed. The system was controlled using a smartphone (bluetooth connection or GSM). We fabricated a functional prototype that was tested for a week installed in a container truck without any problem.